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by Mike
Sun Nov 19, 2017 3:35 am
Forum: Programming
Topic: Programmer's Aid cart Block 5
Replies: 47
Views: 10185

Re: Programmer's Aid cart Block 5

The 27xx EPROM series can be programmed by most EPROMmers, including the TL866CS your ebay link points to.

Regards other chips and chip types, you'll have to check their library.
by Mike
Sat Nov 18, 2017 4:47 am
Forum: Programming
Topic: Programmer's Aid cart Block 5
Replies: 47
Views: 10185

Re: Programmer's Aid cart Block 5

Can you put the SE rom on a normal cart if you already have a 3k expander? If that +3K RAM expander is the one of CBM, that provides two places for (EP)ROMs. Actually, the Super Expander is just such a +3K RAM cartridge with an extra 4K ROM fitted, see here: Denial-WIKI: VIC-1211A inside . A progra...
by Mike
Thu Nov 16, 2017 8:16 am
Forum: Hardware and Tech
Topic: VIC-2000 Expander. Modern Power Using Retro Parts!
Replies: 96
Views: 1795

Re: VIC-2000 Expander. Modern Power Using Retro Parts!

I can't tell from the photo, is your HV supply a Marx setup, or Cockroft? Neither. The HV supply is located in another building and operates with thyristors, high voltage transformers, rectifiers and capacitors - each module is capable of supplying 35 kV@50 A, and they can be connected in parallel ...
by Mike
Thu Nov 16, 2017 4:51 am
Forum: Hardware and Tech
Topic: VIC-2000 Expander. Modern Power Using Retro Parts!
Replies: 96
Views: 1795

Re: VIC-2000 Expander. Modern Power Using Retro Parts!

When I was young, I had a huge interest in fixing old tube radios (1940-1950 stuff), [...] Those are my toys at work: :mrgreen: tube.jpg It's a CQK 200/4A vacuum tetrode subjected to a first isolation test with 30 Kilovolts between anode and grids. Behind you see the HV cabin of the test bench with...
by Mike
Wed Nov 15, 2017 3:51 pm
Forum: Hardware and Tech
Topic: VIC-2000 Expander. Modern Power Using Retro Parts!
Replies: 96
Views: 1795

Re: VIC-2000 Expander. Modern Power Using Retro Parts!

Sure, it will be cool to see a stock VIC-20 kick Amiga's ass 10x over, but it comes at a large investment in time. I am doing this because when I was 12 years old, I said I would. [...] At that time, there surely was a discrepancy to be felt between the (graphic) capabilities of the VIC-20, and wha...
by Mike
Wed Nov 15, 2017 9:27 am
Forum: Programming
Topic: MINIGRAFIK lineart
Replies: 9
Views: 166

Re: MINIGRAFIK lineart

What would you want to use it for? I want to use for very long diagonal like those used for the lighthouse. [...] Diagonal data: X 90 to100 : Y 85 to 190 XX 140 to 150 : YY 85 to 190 The built-in line drawing command obviously can put those on screen perfectly well with @1,90,85TO100,190 and @1,140...
by Mike
Tue Nov 14, 2017 8:31 am
Forum: Programming
Topic: MINIGRAFIK lineart
Replies: 9
Views: 166

Re: MG lineart - Lighthouse

Hi, Armando. I merged all your threads with MINIGRAFIK lineart into one thread. The chances are higher to keep up a coherent discussion if you don't open a new thread for each new example. There's an all-compassing topic title, which fits: "MINIGRAFIK lineart". Attached d64 files with auto...
by Mike
Sun Nov 12, 2017 12:07 pm
Forum: Hardware and Tech
Topic: VIC-2000 Expander. Modern Power Using Retro Parts!
Replies: 96
Views: 1795

Re: VIC-2000 Expander. Modern Power Using Retro Parts!

Should be able to get onto building the VGA generator very soon. As soon as you've settled upon a given screen dimension (width x height), memory layout and pixel definition (direct to DAC or palette), just call out for a converter. When you aim to improve upon my VFLI images, I want my share at th...
by Mike
Sun Nov 12, 2017 10:47 am
Forum: Hardware and Tech
Topic: VIC-2000 Expander. Modern Power Using Retro Parts!
Replies: 96
Views: 1795

Re: VIC-2000 Expander. Modern Power Using Retro Parts!

Brad, it's still not IO "BLock" 3 - just I/O 3. No use in inventing new names for old things - this only leads to confusion. The BL oc K signals refer to the VIC-20 schematics as they are produced by the '138 UC5 and which select all eight 8 KB ranges as seen by the CPU. BLK0 accesses (mai...
by Mike
Sat Nov 11, 2017 10:19 pm
Forum: Hardware and Tech
Topic: VIC-2000 Expander. Modern Power Using Retro Parts!
Replies: 96
Views: 1795

Re: VIC-2000 Expander. Modern Power Using Retro Parts!

Please don't mix up BLKx and I/O x designators. The select signals BLK1, BLK2, BLK3 and BLK5 on the cartridge connector map to $2000..$3FFF, $4000..$5FFF, $6000..$7FFF and $A000..$BFFF respectively, and I/O 2 and I/O 3 map to $9800..$9BFF and $9C00..$9FFF. There's no such thing as "I/O Block-3&...
by Mike
Sat Nov 11, 2017 5:38 pm
Forum: Hardware and Tech
Topic: My first try at EPROMs
Replies: 39
Views: 432

Re: My first try at EPROMs

Floopy wrote:What would you use 2K eproms for?

2732 EPROMs hold 32 kbit ^= 4 KB. That's entirely sufficient to store a small homebrew on cartridge, like I did with TRON Light Cycles.
by Mike
Sat Nov 11, 2017 4:09 am
Forum: Collecting and History
Topic: One VIC-20 Release for Zoo 2017 ...
Replies: 5
Views: 210

Re: One VIC-20 Release for Zoo 2017 ...

tonyrocks wrote:I love new VIC demoscene stuff!!!

Just the so-called 'sceners' consider themselves as being too 8) to post here in Denial.
by Mike
Sat Nov 11, 2017 3:29 am
Forum: Hardware and Tech
Topic: Dead as a Dodo
Replies: 8
Views: 195

Re: Dead as a Dodo

Did you check the fuse of the power supply?
by Mike
Sat Nov 11, 2017 3:14 am
Forum: Hardware and Tech
Topic: My first try at EPROMs
Replies: 39
Views: 432

Re: My first try at EPROMs

eslapion wrote:Last time I checked, 2732 EPROMs were as rare as hen's teeth.

:lol:

I got confused with the C64 CG which has one /CS active high and another one active low.

http://sleepingelephant.com/ipw-web/bulletin/bb/viewtopic.php?t=8448&start=9
by Mike
Sat Nov 11, 2017 2:38 am
Forum: Hardware and Tech
Topic: My first try at EPROMs
Replies: 39
Views: 432

Re: My first try at EPROMs

[...] The original VIC-20 character generator is a 2332 which uses 2 different independent chip select lines. Definitely the most complicated to replace and it usually requires an EPROM along with a logic gate. [...] Nothing complicated about that. /OE and /CS of a 2732 with an adapter socket do th...

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